The Penguins placed Nick Petersen on unconditional waivers, which generally means (outside of the ordinary course buyouts window(s)) that he was granted a mutual release (see: LeClair, John). Petersen was dealing with some personal issues late last season as I understand it and his future is in question it seems. Petersen will clear waivers tomorrow and become an unrestricted free agent. I'm under the impression that this is a release and not a buyout, so I don't believe there will be any cap penalty but I'll try to get more details about it tomorrow...